Trading Post
| Facility | Base skills | Trivia |
| “ | A facility that deals with Rhodes Island's commercial contracts and agreements with all other parties. It acquires the funds needed to fuel the research and operation of Rhodes Island. | ” |
| —Description |
The Trading Post is one of the nine RIIC facilities in Arknights. It can be built on rooms B101 to B103, B201 to B203, and B301 to B303, but only a maximum of five Trading Posts can be built at a time.
Usage
One of the most important RIIC facilities, Trading Posts are the main source of 
LMD and, to a lesser degree, 
Orundum, by trading 
Pure Gold and 
Originium Shard, respectively, produced by Factories for these essential resources.
Trading Posts will only function when at least one Operator is assigned there, at which they will start acquiring trade orders. Once a trade order is acquired, the player can deliver the required materials to receive the specified resources. The Trading Post will cease acquiring new orders when its order limit is reached until the existing orders are completed, freeing up the order limit.
Initially the Trading Post's business strategy is set to acquire LMD trade orders from Lungmen, which come in three types:
- Low-yield orders, which exchanges 2 Pure Gold for 1000
. - Medium-yield orders, which exchanges 3 Pure Gold for 1500 and are available once the Trading Post is upgraded to Level 2.
- High-yield orders, which exchanges 4 Pure Gold for 2000 and are available once the Trading Post is upgraded to Level 3.
The order types are chosen at random with the following odds based on the Trading Post's level:
| Level/Order | Low-yield | Medium-yield | High-yield | Time |
|---|---|---|---|---|
| Level 1 | 100% | – | – | 2:24:00 |
| Level 2 | 60% | 40% | – | 3:30:00 |
| Level 3 | 30%/15%1/5%2 | 50%/30%1/10%2 | 20%/55%1/85%2 | 4:36:00 |
- 1 With Tailoring α
- 2 With Tailoring β
Once the Trading Post is upgraded to Level 3, it can switch its business strategy to acquire Orundum trade orders from Rim Billiton, which exchanges 2 Originium Shards for 20 
in a baseline time of 2:00:00.
Once the Control Center is upgraded to Level 3, 
Drone can be used to speed up Trading Posts' order acquisition, but they will not benefit from base skills related to the Trading Post.
Levels
| Level | Mats. and prereqs. | Operators | Order limit | Trade orders | Power |
|---|---|---|---|---|---|
| 1 |  10  1 Level 1 Factory ×1
|
1 | 6 | 2 for 1000
|
−10 |
| 2 | 60  3 Level 3 Control Center
|
2 | 8 | 2 for 1000 3 for 1500
|
−30 |
| 3 | 120  5 Level 5 Control Center
|
3 | 10 | 2 for 1000 3 for 1500 4 for 2000 2 for 20
|
−60 |
Tips
- Switching between LMD to Orundum trade orders will apply the change to the next orders instead of the current/ongoing one.
- Unless if the player have plenty of LMD and materials to burn, it is generally not recommended to pursue Orundum trade orders due to the LMD cost and materials needed forcing the player to spend their
Sanity to farm them, which might hinder Operator development.